Valid
Correct for
an argument in logic.
Value
The quantity
that is the result of applying an algebraic expression to some given
numerical number. For example, 9 is the value of the expression
2x^{2 }
x +3 for x = 2.
Variable
Any number in
a given set, usually represented by a letter (or symbol). For example,
,
x is the variable and the set (domain) consists of all real numbers.
Volume
The
volume of a geometric solid is the mesaure of the space contained
in the solid. Geometric
formulas
